Exploring the relationship between kinematic variability and fatigue development during repetitive lifting

Oomen, Nathalie M.C.W.; Graham, Ryan B.; Fischer, Steven L.

doi:10.1016/j.apergo.2022.103922

Cited by 5 publications

(1 citation statement)

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“…Specifically, van Dieën et al 5 also discriminated two groups based on their endurance time during isometric contractions of the erector spinae, and showed a significant higher EMG activation variability in the endurance group. Oomen et al 6 also suggested that a lower motor variability could favor early state of fatigue and less endurance during a repetitive lifting task, and could increase the risk of development for muscular disorders. Consequently, comparing the neuromotor strategies employed by pianists of different endurance characteristics might help identify the factors slowing down the rate of fatigue development.…”

Section: Introductionmentioning

confidence: 99%

Neuromotor variability partially explains different endurance capacities of expert pianists

Goubault,

Turner,

Mailly

et al. 2023

Sci Rep

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During fatiguing piano tasks, muscle fatigue develops differently between expert pianists. Differences in neuromotor strategies employed could explain a slower rate of fatigue development. The objective was to compare muscle activation and kinematic variabilities between ShortDuration (i.e., pianists with less endurance) and LongDuration groups. Results from 49 pianists showed that EMG activation variability of most shoulder and upper limbs muscles was greater for the ShortDuration group with time during two piano fatiguing tasks, namely Digital and Chord tasks. Segment acceleration variability, assessed using inertial measurement units, was also greater with time for the ShortDuration group at the right arm during the Digital task, and at the thorax and head during the Chord task. Finally, thorax lateroflexion variability increased with time for the LongDuration group (but not the ShortDuration group) during the Digital task. During the Chord task, wrist flexion variability was higher for the LongDuration group compared to the ShortDuration group. These results showed a direct effect of time on the pianists’ acceleration variability and EMG activation variability. In contrast, a protective effect of fatigue development could be attributed to kinematic variability. Results also suggest a higher risk of injury among pianists in the ShortDuration group.

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Section: Introductionmentioning

confidence: 99%